Analyzer and Analysis Method

The invention relates to an analyzer. The analyzer includes a flow channel through which a particle flows through, a particle image analysis device, a scattering amplitude measurement device, and an data generator. The particle image analysis device includes an imaging unit which captures an image of the particle flowing through the flow channel, a first acquisition unit the image which obtains a size of the particle captured in the image. The scattering amplitude measurement device includes: a laser light source which emits laser light to the flow channel; a photodetector which detects transmitted light transmitting the flow channel and scattered light caused by the particle; and a second acquisition unit which obtains a complex scattering amplitude of the particle based on changes over time in interference between the transmitted light and the scattered light. Using the obtained size and complex scattering amplitude, the data generator generates characteristic information including the complex refractive in